title: TLR9 turns the tide on Treg cells.
abstract: In this issue of Immunity, Hall et al. (2008) demonstrate that commensal bacterial DNA can suppress Treg cell conversion via TLR9-mediated activation of lamina propria dendritic cells and thus potentially disrupt intestinal homeostasis.
authors.affiliation: School of Biochemistry and Immunology, Trinity College, Dublin 2, Ireland. kingston.mills@tcd.ie
authors.forename: Kingston H G
authors.initials: KH
authors.lastname: Mills
mesh_terms: D000818:Animals; D001419:Bacteria / Q000276:immunology / Q000378:metabolism; D016207:Cytokines / Q000276:immunology / Q000378:metabolism*; D003713:Dendritic Cells / Q000276:immunology* / Q000378:metabolism; D007249:Inflammation / Q000276:immunology / Q000378:metabolism; D007413:Intestinal Mucosa / Q000276:immunology* / Q000378:metabolism; D051379:Mice; D009092:Mucous Membrane / Q000276:immunology / Q000378:metabolism; D053473:Nod2 Signaling Adaptor Protein / Q000276:immunology / Q000378:metabolism; D015398:Signal Transduction; D050378:T-Lymphocytes, Regulatory / Q000276:immunology* / Q000378:metabolism; D018417:Th1 Cells / Q000276:immunology* / Q000378:metabolism; D051217:Toll-Like Receptor 9 / Q000819:agonists / Q000276:immunology / Q000378:metabolism*
chemical_list: D016207:Cytokines; D053473:Nod2 Signaling Adaptor Protein; C495945:Nod2 protein, mouse; D051217:Toll-Like Receptor 9